1 dnl Process this with autoconf to create configure
5 AC_INIT([libffi], [3.0.13], [http://github.com/atgreen/libffi/issues])
6 AC_CONFIG_HEADERS([fficonfig.h])
9 target_alias=${target_alias-$host_alias}
11 . ${srcdir}/configure.host
17 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
18 # We must force CC to /not/ be precious variables; otherwise
19 # the wrong, non-multilib-adjusted value will be used in multilibs.
20 # As a side effect, we have to subst CFLAGS ourselves.
21 # Also save and restore CFLAGS, since AC_PROG_CC will come up with
22 # defaults of its own if none are provided.
24 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
25 m4_define([_AC_ARG_VAR_PRECIOUS],[])
29 m4_undefine([_AC_ARG_VAR_PRECIOUS])
30 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
37 AC_CONFIG_MACRO_DIR([m4])
39 # Test for 64-bit build.
40 AC_CHECK_SIZEOF([size_t])
44 # The AX_CFLAGS_WARN_ALL macro doesn't currently work for sunpro
46 if test "$ax_cv_c_compiler_vendor" != "sun"; then
50 if test "x$GCC" = "xyes"; then
51 CFLAGS="$CFLAGS -fexceptions"
55 set CC_FOR_TARGET "$CC"
61 AC_CHECK_HEADERS(sys/mman.h)
63 AC_FUNC_MMAP_BLACKLIST
65 dnl The -no-testsuite modules omit the test subdir.
66 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
71 TARGET=AARCH64; TARGETDIR=aarch64
75 TARGET=ALPHA; TARGETDIR=alpha;
76 # Support 128-bit long double, changeable via command-line switch.
77 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
81 TARGET=ARC; TARGETDIR=arc
85 TARGET=ARM; TARGETDIR=arm
88 amd64-*-freebsd* | amd64-*-openbsd*)
89 TARGET=X86_64; TARGETDIR=x86
93 TARGET=X86_64; TARGETDIR=x86
97 TARGET=X86_64; TARGETDIR=x86
101 TARGET=AVR32; TARGETDIR=avr32
105 TARGET=BFIN; TARGETDIR=bfin
109 TARGET=LIBFFI_CRIS; TARGETDIR=cris
113 TARGET=FRV; TARGETDIR=frv
116 hppa*-*-linux* | parisc*-*-linux* | hppa*-*-openbsd*)
117 TARGET=PA_LINUX; TARGETDIR=pa
120 TARGET=PA64_HPUX; TARGETDIR=pa
123 TARGET=PA_HPUX; TARGETDIR=pa
126 i?86-*-freebsd* | i?86-*-openbsd*)
127 TARGET=X86_FREEBSD; TARGETDIR=x86
129 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2* | i?86-*-interix*)
130 TARGET=X86_WIN32; TARGETDIR=x86
131 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
132 # We must also check with_cross_host to decide if this is a native
133 # or cross-build and select where to install dlls appropriately.
134 if test -n "$with_cross_host" &&
135 test x"$with_cross_host" != x"no"; then
136 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
138 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
142 TARGET=X86_DARWIN; TARGETDIR=x86
144 i?86-*-solaris2.1[[0-9]]*)
146 if test $ac_cv_sizeof_size_t = 4; then
154 TARGET=X86_DARWIN; TARGETDIR=x86
157 x86_64-*-cygwin* | x86_64-*-mingw*)
158 TARGET=X86_WIN64; TARGETDIR=x86
159 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
160 # We must also check with_cross_host to decide if this is a native
161 # or cross-build and select where to install dlls appropriately.
162 if test -n "$with_cross_host" &&
163 test x"$with_cross_host" != x"no"; then
164 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
166 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
170 i?86-*-* | x86_64-*-*)
172 if test $ac_cv_sizeof_size_t = 4; then
187 TARGET=IA64; TARGETDIR=ia64
191 TARGET=M32R; TARGETDIR=m32r
195 TARGET=M68K; TARGETDIR=m68k
199 TARGET=MICROBLAZE; TARGETDIR=microblaze
203 TARGET=MOXIE; TARGETDIR=moxie
207 TARGET=METAG; TARGETDIR=metag
210 mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
211 TARGET=MIPS; TARGETDIR=mips
213 mips*-*-linux* | mips*-*-openbsd*)
214 # Support 128-bit long double for NewABI.
215 HAVE_LONG_DOUBLE='defined(__mips64)'
216 TARGET=MIPS; TARGETDIR=mips
219 powerpc*-*-linux* | powerpc-*-sysv*)
220 TARGET=POWERPC; TARGETDIR=powerpc
223 TARGET=POWERPC; TARGETDIR=powerpc
226 TARGET=POWERPC; TARGETDIR=powerpc
228 powerpc-*-darwin* | powerpc64-*-darwin*)
229 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
231 powerpc-*-aix* | rs6000-*-aix*)
232 TARGET=POWERPC_AIX; TARGETDIR=powerpc
234 powerpc-*-freebsd* | powerpc-*-openbsd*)
235 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
237 powerpc64-*-freebsd*)
238 TARGET=POWERPC; TARGETDIR=powerpc
241 TARGET=POWERPC; TARGETDIR=powerpc
244 s390-*-* | s390x-*-*)
245 TARGET=S390; TARGETDIR=s390
248 sh-*-* | sh[[34]]*-*-*)
249 TARGET=SH; TARGETDIR=sh
252 TARGET=SH64; TARGETDIR=sh64
256 TARGET=SPARC; TARGETDIR=sparc
260 TARGET=TILE; TARGETDIR=tile
264 TARGET=XTENSA; TARGETDIR=xtensa
269 AC_SUBST(AM_RUNTESTFLAGS)
270 AC_SUBST(AM_LTLDFLAGS)
272 if test $TARGETDIR = unknown; then
273 AC_MSG_ERROR(["libffi has not been ported to $host."])
276 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
277 AM_CONDITIONAL(BFIN, test x$TARGET = xBFIN)
278 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
279 AM_CONDITIONAL(X86, test x$TARGET = xX86)
280 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
281 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
282 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
283 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
284 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
285 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
286 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
287 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
288 AM_CONDITIONAL(MICROBLAZE, test x$TARGET = xMICROBLAZE)
289 AM_CONDITIONAL(METAG, test x$TARGET = xMETAG)
290 AM_CONDITIONAL(MOXIE, test x$TARGET = xMOXIE)
291 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
292 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
293 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
294 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
295 AM_CONDITIONAL(AARCH64, test x$TARGET = xAARCH64)
296 AM_CONDITIONAL(ARC, test x$TARGET = xARC)
297 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
298 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
299 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
300 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
301 AM_CONDITIONAL(S390, test x$TARGET = xS390)
302 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
303 AM_CONDITIONAL(SH, test x$TARGET = xSH)
304 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
305 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
306 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
307 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
308 AM_CONDITIONAL(TILE, test x$TARGET = xTILE)
309 AM_CONDITIONAL(XTENSA, test x$TARGET = xXTENSA)
312 AC_CHECK_FUNCS(memcpy)
315 AC_CHECK_SIZEOF(double)
316 AC_CHECK_SIZEOF(long double)
318 # Also AC_SUBST this variable for ffi.h.
319 if test -z "$HAVE_LONG_DOUBLE"; then
321 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
322 if test $ac_cv_sizeof_long_double != 0; then
324 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
328 AC_SUBST(HAVE_LONG_DOUBLE)
334 if test x$TARGET = xSPARC; then
335 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
336 libffi_cv_as_sparc_ua_pcrel, [
337 save_CFLAGS="$CFLAGS"
338 save_LDFLAGS="$LDFLAGS"
339 CFLAGS="$CFLAGS -fpic"
340 LDFLAGS="$LDFLAGS -shared"
341 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
342 [libffi_cv_as_sparc_ua_pcrel=yes],
343 [libffi_cv_as_sparc_ua_pcrel=no])
344 CFLAGS="$save_CFLAGS"
345 LDFLAGS="$save_LDFLAGS"])
346 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
347 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
348 [Define if your assembler and linker support unaligned PC relative relocs.])
351 AC_CACHE_CHECK([assembler .register pseudo-op support],
352 libffi_cv_as_register_pseudo_op, [
353 libffi_cv_as_register_pseudo_op=unknown
354 # Check if we have .register
355 AC_TRY_COMPILE(,[asm (".register %g2, #scratch");],
356 [libffi_cv_as_register_pseudo_op=yes],
357 [libffi_cv_as_register_pseudo_op=no])
359 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
360 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
361 [Define if your assembler supports .register.])
365 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
366 AC_CACHE_CHECK([assembler supports pc related relocs],
367 libffi_cv_as_x86_pcrel, [
368 libffi_cv_as_x86_pcrel=no
369 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
370 if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
371 libffi_cv_as_x86_pcrel=yes
374 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
375 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
376 [Define if your assembler supports PC relative relocs.])
379 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
380 libffi_cv_as_ascii_pseudo_op, [
381 libffi_cv_as_ascii_pseudo_op=unknown
382 # Check if we have .ascii
383 AC_TRY_COMPILE(,[asm (".ascii \\"string\\"");],
384 [libffi_cv_as_ascii_pseudo_op=yes],
385 [libffi_cv_as_ascii_pseudo_op=no])
387 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
388 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
389 [Define if your assembler supports .ascii.])
392 AC_CACHE_CHECK([assembler .string pseudo-op support],
393 libffi_cv_as_string_pseudo_op, [
394 libffi_cv_as_string_pseudo_op=unknown
395 # Check if we have .string
396 AC_TRY_COMPILE(,[asm (".string \\"string\\"");],
397 [libffi_cv_as_string_pseudo_op=yes],
398 [libffi_cv_as_string_pseudo_op=no])
400 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
401 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
402 [Define if your assembler supports .string.])
406 # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC.
407 AC_ARG_ENABLE(pax_emutramp,
408 [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC],
409 if test "$enable_pax_emutramp" = "yes"; then
410 AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1,
411 [Define this if you want to enable pax emulated trampolines])
414 if test x$TARGET = xX86_WIN64; then
416 if test "x$sys_symbol_underscore" = xyes; then
417 AC_DEFINE(SYMBOL_UNDERSCORE, 1, [Define if symbols are underscored.])
421 FFI_EXEC_TRAMPOLINE_TABLE=0
424 FFI_EXEC_TRAMPOLINE_TABLE=1
425 AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1,
426 [Cannot use PROT_EXEC on this target, so, we revert to
429 *-apple-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris*)
430 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
431 [Cannot use malloc on this target, so, we revert to
435 AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)
436 AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)
438 if test x$TARGET = xX86_64; then
439 AC_CACHE_CHECK([assembler supports unwind section type],
440 libffi_cv_as_x86_64_unwind_section_type, [
441 libffi_cv_as_x86_64_unwind_section_type=yes
442 echo '.section .eh_frame,"a",@unwind' > conftest.s
443 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
444 libffi_cv_as_x86_64_unwind_section_type=no
447 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
448 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
449 [Define if your assembler supports unwind section type.])
453 if test "x$GCC" = "xyes"; then
454 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
455 libffi_cv_ro_eh_frame, [
456 libffi_cv_ro_eh_frame=no
457 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
458 if $CC $CFLAGS -c -fpic -fexceptions -o conftest.o conftest.c > /dev/null 2>&1; then
459 objdump -h conftest.o > conftest.dump 2>&1
460 libffi_eh_frame_line=`grep -n eh_frame conftest.dump | cut -d: -f 1`
461 libffi_test_line=`expr $libffi_eh_frame_line + 1`p
462 sed -n $libffi_test_line conftest.dump > conftest.line
463 if grep READONLY conftest.line > /dev/null; then
464 libffi_cv_ro_eh_frame=yes
469 if test "x$libffi_cv_ro_eh_frame" = xyes; then
470 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
471 [Define if .eh_frame sections should be read-only.])
472 AC_DEFINE(EH_FRAME_FLAGS, "a",
473 [Define to the flags needed for the .section .eh_frame directive. ])
475 AC_DEFINE(EH_FRAME_FLAGS, "aw",
476 [Define to the flags needed for the .section .eh_frame directive. ])
479 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
480 libffi_cv_hidden_visibility_attribute, [
481 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c
482 libffi_cv_hidden_visibility_attribute=no
483 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
484 if grep '\.hidden.*foo' conftest.s >/dev/null; then
485 libffi_cv_hidden_visibility_attribute=yes
490 if test $libffi_cv_hidden_visibility_attribute = yes; then
491 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
492 [Define if __attribute__((visibility("hidden"))) is supported.])
497 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
499 #define FFI_HIDDEN(name) .hidden name
501 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
505 #define FFI_HIDDEN(name)
518 [ --enable-debug debugging mode],
519 if test "$enable_debug" = "yes"; then
520 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
522 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
524 AC_ARG_ENABLE(structs,
525 [ --disable-structs omit code for struct support],
526 if test "$enable_structs" = "no"; then
527 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
529 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
531 AC_ARG_ENABLE(raw-api,
532 [ --disable-raw-api make the raw api unavailable],
533 if test "$enable_raw_api" = "no"; then
534 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
537 AC_ARG_ENABLE(purify-safety,
538 [ --enable-purify-safety purify-safe mode],
539 if test "$enable_purify_safety" = "yes"; then
540 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
543 # These variables are only ever used when we cross-build to X86_WIN32.
544 # And we only support this with GCC, so...
545 if test "x$GCC" = "xyes"; then
546 if test -n "$with_cross_host" &&
547 test x"$with_cross_host" != x"no"; then
548 toolexecdir='$(exec_prefix)/$(target_alias)'
549 toolexeclibdir='$(toolexecdir)/lib'
551 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
552 toolexeclibdir='$(libdir)'
554 multi_os_directory=`$CC -print-multi-os-directory`
555 case $multi_os_directory in
556 .) ;; # Avoid trailing /.
557 ../*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
559 AC_SUBST(toolexecdir)
561 toolexeclibdir='$(libdir)'
563 AC_SUBST(toolexeclibdir)
565 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
566 AC_CONFIG_COMMANDS(src, [
567 test -d src || mkdir src
568 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
569 ], [TARGETDIR="$TARGETDIR"])
571 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
573 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)